I was running Dell diagnostics online on a remote desktop connection. About a minute after diagnostics started, this filled the whole screen. 
I immediately shut the machine down, and restarted. Everything looked normal, and I am running an in depth virus scan right now.
I did a reverse google image search, and did not get any similar results.
I have done this same process on many other computers, and have never gotten this kind of result. Has anyone else seen anything similar?